Respuesta :

DSK08

Answer:

0

Step-by-step explanation:

-7 = x - 7

-7 + 7 = x

.: x = - 7 + 7

.: x = 0

muffinalex
-7=X-7 OR X-7=-7(same thing)
+7 to both side
0=X OR X=0 (same thing)

Answer is X=0